Addendum: After posting about the change signaled by the OTC genetics testing kit that’s going on sale at Walgreen’s, I bumped into this article posted a couple of weeks ago by Esther Dyson on HuffPo. She makes a strong statement about how big the market for self-tracking products and services for health is getting. There’s a big movement afoot by users and by service providers for folks to dig deeper into their health characteristics. Her remarks are right in line with what I see happening.